Fuel temperature regulator and distributor



Sept. 10, 1940. o. c. BETRY 2,214,400

FUEL TEMPERATURE REGULA'I'QR AND DISTRIBUTOR I Filed May 8, 1959 Patented Sept. 10, 1940 UNITED STATES ant,

PATENT OFFlCE FUEL TEMPERATURE REGULATOR AND I DISTRIBUTOR Owen C. Retry, Glendale, alif.

Application May s, 1939, Serial No. 272,471

7 Glaims. (Cl. 123l22) engines provided with duplex manifolds and with which the common dual throat carburetor is employed. The temperature regulator and distributcr not only functions to control the fuel temperature and as a means to by-pass gasoline vapors from the carburetor directly to the end cylinders as described in my Patent No. 2,125,216, dated July 26, 1938, but has the additional functions of providing a means to agitate the supply of fuel mixture and another means to equalthe supply of fuel mixture to the manifolds.

In the modern types of multiple cylinder gas engines in which the cylinders are arranged in opposed banks, a number of difficulties in operation have been encountered. In the first instance, it has been found that the fuel mixture requirements of each bank of cylinders is not equal. Again, it has been found that the ordinary mixing of air and gasoline vapors afforded by the carburetors in common use is not sufficient for the purposes of the modern high speed envention, an apparatus is provided that functions to obviate the hereinabove outlined objections.

The main object of my invention is to provide a means which is readily adapted for installation on existing engines of the opposed cylinder bank type employing duplex manifolds in a manner to equalize or balance the supply of fuel mixture to the manifolds.

Another object is to provide auxiliary means for agitating and mixing the fuelsupply, comprising air and gasoline vapors.

A further object is to provide a single attachment to an existing carburetor that functions both to permit auxiliary fuel feed to each end cylinder as Well as to permit control of the temperature of the fuel feed and crank case oil.

For a full disclosure of the invention, reference is made to the accompanying drawing, wherein- Figure 1 is a top plan view of the device with parts removed;

Fig. 2 is a view in section on line 2-2 of Fig 1; and

Fig. 3 is a view in section on line 3-3 of Fig. 1. Referring to the drawing in detail, the essential feature of my invention comprises a device i, preferably a casting, which is adapted to be inserted between the intake neck of a duplex manifold of the common type employed with the conventional V-8 motor and the base of a standard dual throat carburetor in a manner shown in Fig. 1 of Patent 2,125,216.

Referring to Fig. l, the casting I provide a pair of gas intake conduits 2 and 3. The opposite sides'of the casting l are tapped to receive T-shaped fittings 5 and 5 which provide a communication between conduits 2 and 3,

and four conduits (not shown) which are tapped,

respectively, into the manifold at points opposite each of the four end cylinders. The fittings 4 and 5 are adapted to receive and support cylindrical wire mesh screens 6 and l which aid in agitating the fuel mixture and the transfer of Q flange 8 formed integrally in the bottom of the casting l. The edges of flanges 8 are shaped to provide circular openings 9 and it, the diameters of which are equal and approximately slightly more, than half the diameter of the conduits 2- and 3. The circular openings 55 and it are internally tangent to the circular conduits 2 and 3; at the narrowest point of the wall ii separating the conduits. Passages i2 and 25 formed in the body of the casting 5 immediately above the flanges interconnect conduits?! and 3.

The casting l is further provided with a reservoir it formed in the body. thereof. The reservoir is tapped to receive an oil feed pipe l5 and an oil outlet pipe it. Oil is pumped from the crank case through pipe it into the reservoir I4 and thence through pipe is back to the crank case.

In operation, a fuel mixture comprising air and gasoline vapors is drawn downwardly from the dual throats of a carburetor through intake conduits 2 and 3. The flow of fuel is there restricted by the Venturi action of the flanges 8 and the circular orifices 9 and it. The restricted flow creates a high turbulence of the fuel in the conduits 2 and 3. As a result, the fuel mixture is is formed to 10 thoroughly agitated and mixed. The mixing action is aided by the baffle effect of screens 6 and i. A further result of the high turbulence of the fuel mixture produced in the intake conduits is to facilitate the flow of fuel mixture through passages and IE to equalize or balance the supply of fuel mixture automatically according to the requirements of the manifolds. Portions of the fuel mixture are by-passed from conduits 2 and 3 through fittings i and 5 and conduits (not shown) to each end cylinder. At the same time, oil is pumped from the crank case through pipe to l the reservoir id and thence out through pipe l6 and back to the crank case in a manner to heat or cool the fuel mixture, depending upon the temperature of such fuel with respect to that of the crank case oil. The screens f3 and l assist in the transfer of heat between the fuel and oil by virtue of the large surface area thereof.

It will be noted that the outer wall portion of conduit i2 is in close heat exchange relation to the oil in reservoir M whereby fuel passing through this conduit will be readily heated by hot oil in this reservoir. The throat of the Venturi passage is positioned in the plane of the flanges 8 and lies close to the respective ends of the fuel balancing passages 52 and i3. Since such a throat determines a low pressure area, the interchange of fuel through these passages is facilitated to more readily provide interchange of fuel between conduits 2 and 3. While the flanges 8 are shown as extending towards the thin wall H, these flanges may be positioned adjacent the wall l i or at any other point desired in the plane of the lower ends of conduits 2 and 3.

An auxiliary outlet ll may be provided, if desired, to connect thereto a vacuum supply conduit in the gas flow stream, said flange member along its free edge being formed circular in shape, said free edge defining a gas outlet opening positioned eccentrically with respect to the inlet end of the conduit.

2. An adapter casing adapted to be secured in operative position between a carburetor and a manifold and having a pair of gas conduits extending therethrough in parallel relation for feeding gaseous fuel to the manifold, and a fuel flow balancing conduit formed in said casing and being connected at opposite ends thereof respec tively with said gas conduits for permitting transfer of fuel between the conduits.

3. An adapter casing adapted to be secured in operative position between a carburetor and a manifold and having a pair of gas conduits extending therethrough in parallel relation, each said conduit being provided with a flange member extending towards the axis of the conduit, a gas flow equalizer conduit associated with said casing and being connected at opposite ends thereof respectively with said gas conduits at a point adjacent to the respective flange members.

i. In an adapter casing as set forth in claim 3, a reservoir for receiving a supply of heating fluid, said reservoir being positioned in heat exchange relation to said gas conduits and said flow equalizer conduit.

5. In an adapter casing as set forth in claim 3, an outlet for gas formed in the casing adjacent each gas conduit and being adapted to feed gas therefrom to remote ends of the manifold adjacent end cylinders of a gas engine.

6. In an adapter casing as set forth in claim 3, a chamber formed integrally with said casing and adapted to receive a supply of oil from a crank case for heating the gas in the conduits, the flow equalizer conduit being formed in said casing between the chamber and the gas conduits.

'7. In an adapter casing as set forth in claim 3, a gas outlet formed in the side Wall of each gas conduit for feeding gas to remote ends of the manifold, and a cylindrical mixing screen extending from each outlet across a respective gas conduit.

OWEN C. BETRY. 

